svcrdma: Use reply and chunk map for RDMA_READ processing

Modify the RDMA_READ processing to use the reply and chunk list mapping data
types. Also add a special purpose 'hdr_count' field in in the context to hold
the header page count instead of overloading the SGE length field and
corrupting the DMA map length.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index bd8749cc8084..fd5e8a1c17de 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -72,6 +72,7 @@ extern atomic_t rdma_stat_sq_prod;
  */
 struct svc_rdma_op_ctxt {
         struct svc_rdma_op_ctxt *read_hdr;
+        int hdr_count;
         struct list_head free_list;
         struct xdr_buf arg;
         struct list_head dto_q;